Finding the Third Proportional to 2,560,620 and 3,964,590

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560,620 : 3,964,590 = 3,964,590 : x
2. Step 2: Convert to fraction form
   2,560,620/3,964,590 = 3,964,590/x
3. Step 3: Cross multiply
   2,560,620x = 3,964,590 × 3,964,590
4. Step 4: Simplify right side
   2,560,620x = 15,717,973,868,100
5. Step 5: Solve for x
   x = 15,717,973,868,100/2,560,620
6. Step 6: Final answer
   x = 6,138,346.91